The allele for hemophilia is on the X chromosome and is a _____.
-   sex-linked gene
 -   hybrid gene
 -   homozygous gene
 -   heterozygous
 
 
_____ is the passing of traits from one generation to another.
-   Genotype
 -   Genetic engineering
 -   Hybridization
 -   Heredity
 
 
The different forms a gene may have for a trait are called _____.
-   polygenic inheritance
 -   phenotype
 -   hybrids
 -   alleles
 
 
In _____ both alleles are expressed in offspring.
-   incomplete dominance
 -   sex-linked genes
 -   genetic engineering
 -   complete dominance
 
 
A plant that receives different genetic information from each parent is a(n) _____.
-   hybrid
 -   allele
 -   phenotype
 -   sex-linked gene
 
 
A _____ trait covers up other traits
-   dominant
 -   recessive
 -   heterozygous
 -   homozygous
 
 
In a Punnett square, a small letter (t) stands for a _____ allele.
-   homozygous
 -   dominant
 -   recessive
 -   heterozygous
 
 
A tool used to predict the possible offspring of a mating is called a _____.
-   Phonetic square
 -   Punnett square
 -   Polygenic square
 -   Hereditic square
 
 
The genetic makeup of an organism is called its _____.
-   inheritance
 -   allele
 -   phenotype
 -   genotype
 
 
_____ is the way an organism looks and behaves as a result of its genotype.
-   Phenotype
 -   Prototype
 -   Punnettype
 -   Hereditype
 
 
The study of how traits are inherited through the interactions of alleles is _____.
-   genetic engineering
 -   genetics
 -   biology
 -   psychology
 
 
Through _____ scientists are experimenting to change the arrangement of DNA in a gene.
-   genetic engineering
 -   hybridization
 -   polygenic inheritance
 -   recessive manipulation
 
 
An organism with two alleles that are exactly the same is _____.
-   homozygous
 -   heterozygous
 -   recessive
 -   dominant
 
 
_____ occurs when a group of gene pairs acts together to produce a single trait.
-   Genotyping
 -   Genetic engineering
 -   Incomplete dominance
 -   Polygenic inheritance
 
 
An organism that has two different alleles for a trait is _____.
-   heterozygous
 -   homzygous
 -   recessive
 -   dominant
 
 
A type of inheritance where more than one gene controls a trait is _____.
-   homozygous
 -   homogenous
 -   heterozygous
 -   polygenic
 
 
An organism whose two alleles for a trait are exactly the same is _____.
-   homozygous
 -   homogenous
 -   heterozygous
 -   polygenic
 
 
Every organism has a specific number of _____.
-   chromosomes
 -   meiosis
 -   embryos
 -   mutations
 
 
_____ influences on genes can be internal or external.
-   Environmental
 -   Cryogenic
 -   Maternal
 -   Paternal
 
 
One pair of chromosomes determines sex of an organism. XX means the offspring will be _____.
-   male
 -   female
 -   mutant
 -   normal
 
 
One pair of chromosomes determines sex of an organism. XY means the offspring will be _____.
-   male
 -   female
 -   mutant
 -   normal
 
 
_____ is used to help produce large volumes of medicine.
-   Genetic engineering
 -   Polygenics
 -   Photogenic engineering
 -   Cryogenics
 
 
_____ DNA is made by inserting a useful segment of DNA from one organism into a bacterium.
-   Combatant
 -   Recombinant
 -   Artificial
 -   Original
 
 
_____ determined the basic laws of genetics.
-   Albert Einstein
 -   Isaac Newton
 -   Eric Mendelson
 -   Gregor Mendel
 
 
When a pair of chromosomes separates during _____, the different alleles move into separate sex cells.
-   meiosis
 -   mitosis
 -   halitosis
 -   oasis